针对低阈值半导体量子结构激光器（简称量子结构激光器），包括量子阱、量子线和量子点结构，给出了一个完整简便的方法用以优化设计最低阈值条件所需要的有源区结构。

• For quantum structure lasers, including quantum well, quantum wire and quantum box lasers, a simple method is presented to obtain the optimized structure of the active region for low threshold condition.